Scrubber.



A. D. LEE. SGEUBBER.

APPLICATION FILED JULY 1, 1909 Patented Mar. 28, 1911.

2 SHEETS-SHEET 1.

WATER LEVEL- 8] is? w "Witnesses:

Mm @MM A. D. LEE.

SGRUBBER.

APPLICATION FILED JULY 1, 1909.

Patented Mar. 28, 1911.

[SHEETS-SHEET 2.

. To all whom it may concern:

UNITED STAES ATENT oFFIoE.

ALVA I). LEE, 0]? BOSTON, MASSACHUSETTS, ASSIGNO R TO LEE FURNACE ANDBURNER COMPANY, A CORPORATION OF NEW YORK.

SCRUBBER.

Be it known that I, ALVA D. LEE, a citizen of the United States ofAmerica, and a resident of Boston, in the county of Suffolk and State ofMassachusetts, have invented certain new and useful Improvements inScrubbers, of which the following is a specification.

This invention relates to scrubbers and especially to an apparatus ofthis class which is particularly adapted for use in the treatment ofvarious ores although the apparatus may be used for a variety of otherpurposes.

The invention consists in certain novel features of construction andarrangement of parts which will be readily understood by reference tothe description of the drawings and to the claims hereinafter given.

Of the drawings: Figure 1 represents a vertical section of an apparatusembodying the features of this invention. Fig. 2 represents a horizontalsection of the same, the cutting plane being on line 22 on Fig. l, andFig. 3 represents a horizontal section of the same, the cutting planebeing on line 3-3 on Fig. 1.

Similar characters designate like parts throughout the drawings.

In the drawings, 10 represents a conical tank the interior wall of whichis provided with a plurality of curved blades 11 the curvature of whichis so constructed as to cause the contents of the tank coming in contactwith these blades to be lifted during the revolution of the tank. Theouter periphery of the tank is provided with an annular flange 12 whichrests upon the antifriction rollers 13 revoluble in suitable bearingsupon a framework 14 of any wellknown construction. This framework '14 isalso provided with a tubular member 15 the upper face of which isprovided with an annular track in which the anti-friction members 16 areadapted to move, the lower end of the .tank 10 being provided with asimilar track resting upon said anti-friction members, thus forming asuitable thrust bearing for said tank.

with an annular projection 17 extending into a depression in the upperend of the member 15 and between this projection 17 and the wall of thedepression in the member 15 is interposed a suitable packing 18.

he tank 10 is provided on its outer pe- Specification of Letters Patent.

Application filed July 1, 1909.

The lower end of the tank 10 is provided Patented Mar. 28, 1911. SerialNo. 505,772.

riphery with a gear 19 with which meshes a pinion 20 secured to orformed upon the drive shaft 21 mounted in a bearing 22 on the framework14. When suitable power is applied to the drive shaft 21 it is obviousthat the tank 10 may be revolved at any desired speed, in the directionof the arrow on on Fig. 2 of the drawings, the blades 11 secured to orformed upon the inner wall of the tank acting upon the contents of thetank coming into contact therewith to .lift that portion of thematerial. As is shown in thedrawings the blades 11 are arranged spirallyupon the inner wall of the tank 10.

Above the tank 10 is a charge floor 23 to the under side of which issecured an annular overflow trough 24: into which the contents of thetank are adapted to overflow and be carried away through the outlet 25.An inverted drum 26 is secured to the top plate 27 of the overflowtrough 24, this drum having its outer end closed as at 28 While theinner end is open and beneath the water line of the tank 10. By means ofthe trough 24-the cover 27 and the inverted drum 2628 the tank is whollyinclosed. The drum 26 is in axial line with the tank 10 and securedto'the head 28-and to the member 15, and in axial line with the tank isa fixed member 29 provided with a plurality of screw propeller blades 30and 31. The upper, screw propeller blades 30 are so constructed as toforce the contents of the tank downwardly as they come into contact withthe blades during the revolution of the tank 10. The lower screwpropeller blade 31 is curved in the opposite direction-so that as thecontents of the tank l0 come into contact therewith during therevolution of the tank the material is diverted upwardly. It is obvioustherefore that as the tank revolves about the fixed central member 29and the screw propeller thereon the blades 11 on the tank will *cause athorough mixing of the material contained' within the tank and cause avortical movement thereof, thus causing a very efiectualintermingling ofthe contents of the tank.

Extending into the inverted drum 26 and beneath the water leveltherein'is an inlet pipe 32 communicating with a furnace or any othersuitable receptacle and through which gas from said furnace or otherreceptacle is adapted to pass into the interior of the drum 26' andthrough the liquid con- '36 the delivery end of which is outward that asuction is created in the pipe ncans of the revolution of the tank 10and the various blades 11, 30 and 31 actmg upon tuined therein, said gaspassing through this i liquid in the direction of the arrows into anoutlet p 1e which is adapted to convey the purified into a gasometcr orinto another scrubber where the operation may be re sated to moreel'lectually purify the gases being treated.

llu the inlet pipe 32 is a suitablc steam jet blower the outlet fromwhich is in the direction of the open end of the inlet pipe 32 so thatwhen the steam is turned on a suction is created in the pipe which willdraw the gases from the furnace or other receptacle through the pipe 32and cause them to pass through the steam jet and also through a spray ofwater delivered through the pipe 35 into the inlet pipe 32 between thenozzle of the steam 'j'et blower and the outlet end of the inlet pipeThe pipe 33 is similarly provided with a steam et blower from the drum26 and said pipe 33 has delivered thereto in front of the said steam.jet a spray of water through the pipe 37 so 83 to cause the withdrawalof the purified gases from the tank 26. A central passage 38 the bottomof the tank 10 communicates with the pipe 39 in which is placed acut-out valve 40 normally closed.

/Vhen the apparatus is in operation the tank 10 is revolved at anydesired rate of speed and the jet blowers 34 and 36 and the water spraysand 37 are set in operation and the tank soon becomes filled with waterto the level indicated in Fig. 1, any exhaust thereof overflowing intothe trough 24: and passing away through the overflow outlet pipe 25."When the steam. jethlowers commence to operate a-suc'tion is created inthe pipes 82 and 33 and the gas from the furnace or other receptacle isdrawn through the pipe and downwardly into the water contained Withinthe tank 10. While passing through this water it will be so agitated bythe contents of the tank that the impurities contained within the gaswill be sepaatcd therefrom and deposited in the lower part of the tankand through the passage 3&5 into the pipe It is obvious that all of theheavier particles contained v'itllin. the gas Willseek their lowestlevel and drop into this portion of the tank while the remainder or thewith these heavier particles removed therefrom will be drawn out of thedrum 26 by the suction of the jet blower 36 0t thcwpipe 33 where it maypass into an other scrubber to be more thorougl'lly treatcd or into agasometer where it may be stored in its purified state. i

This makes a very etlectivc apparatus which is particularly adapted 'loruse in connection with the relin l of certain ores conaeaave taining a.variety of metallic particles, the heavier parts of which are adapted todrop to the bottom of the tank and be drawn; oil' through the pipe 39when the valve i0 is open while the lighter particles will be retainedin the gaseous mixture by the complete agitation of the contents of thetank.

and be drawn o'll' with the gas into another receptacle. I

lt is believed that the operation and many advantages or the inventionwill be thoroughly understood from the foregoing description.

claim 1. An apparatus oi the nature disclosed combining a mixing tankadapted to con tain liquid at a predetermined level, an inv rted drumhaving a dome free from open pertorations'and having an openedenddepending into said tank below the level 'of Having thus described myinvention, 1 l

said liquid, a gas inlet pipe having a tight fit through the dome ofsaid drum and tor minating therein below said liquid level, a device forcreating a suction in said inlet, and a gas outlet pipe having a tightlit through said drum and terminating therein above the liquid in saidtank.

3. lln a device of the class described, the combination out a mixingtank adapted to contain liquid; an inverted drum closed at the top andhaving an open'end which ex tends into said tank; a gas inlet to theinterior of said drum extending below the water line; a steam jet blowerin said inlet; means adapted to discharge a supply of water in the pathof said steam jet blower; and a gas outlet from said drum the inner endof which is above the liquid in said tank.

4. In a device of the class described, the combination of a mixing tankadapted to contain liquid; an inverted drum closed at the top and havingan open end. Which extends into said tank; a gas inlet to the interiorof said drum extending below the ater line; a gas outlet from said drum.the inner end of which is above the liquid in said tank; a steam jetblower in said outlet for creating a suction; and means adapted todischarge a supply of: water in the path of said. steam jet blower.

5. An apparatus ofthe nature disclosed combining a revoluble tank adated to contain liquid at a predetermined evel, a stationary inverteddrum having a dome free vfrom open perforations and having an opened cnddepending into said revoluble tank below the level of the liquidtherein, a gas inlet pipe having a tight fit through the dome 0t saiddrum and terminating therein below the level of said liquid, a gasoutlet pipe having a tight fit through the dome of said drum andterminating therein above the liquid in said tank, and a device in eachpipe for creating a suction therein.

In a device of the class described, the

- crunbination of a revoluble tank adapted to contain liquid; a fixedinverted drum closed at the top and having an open end whichextends intosaid tank below thewater line; a gas inlet pipe extending into said drumwith its discharge below the water line; a outlet from said drum theinner end of which is above the liquid in said tank; a device in eachpipe for, creating a suction therein; and a waterspray in each of saidpipes.

7. in a device of the class described, the combination of a revolubletank adapted to contain liquid; a fixed inverted drum closed at the topand having an open end which extends into said tank below the waterline; a gas inlet pipe extending into said drum with its discharge endbelow the water line; a gas outlet pipe from said drum the inner end ofwhich is above the liquid in said tank; a device in each pipe forcreating a suction therein; and means within said tank for creating acirculation of its contents.

8. In a device of the class described, the combination of a revolubletank adapted to contain liquid; a fixed inverted drum closed at the topand having an open end which extends into said tank below the waterline; a gas inlet pipe extending into said drum with its discharge endbelow the water line; a gas outlet pipe from said drum the inner end ofwhich is above the liquid in said tank; a device in each pipe forcreating a suction therein; and a plurality of mixing blades within saidtank for creating a circulation of its contents.

9. in a device of the class described, the

blades; and a plurality of blades secured to the inner wall of saidtank.

10. In a device of the class described, the

combination of a revoluble tank; a fixed inverted drum the open end ofwhich extends into said tank below the water line; a gas inlet pipeextending into said drum with its discharge end below the water line; agas outlet 1pc from said drum; a device in each of said pipes forcreating a suction therein; a fixed member secured in the center of saidtank provided with a plurality of propeller blades; and a plurality ofblades secured to the inner wall of said tank, said propeller blades andtank blades being so curved as to cause a vortical movement of thematerials contained in said tank during its rotation.

11. In a deviceof the class described, the combination of a revolubletank; a fixed inverted drum the open end of which extends into said tankbelow the water line; a gas inlet pipe extending into said drum with itsdischarge end below the water line; a gas outlet pipe from said drum; adevice in each of said pipes for creating a suction therein;

a fixed member secured .in the center of said tank provided with aplurality of propeller blades; a plurality of blades secured to theinner wall of said tank, said propeller blades and tank blades being socurved as to cause a vortical movement of the materials contai-ncd insaid tank during its rotation; and an annular trough surrounding saidtank adapted to carry away the overflow from said revoluble tank.

Signed by me at 4r- Post Oflice Sq., Boston,

